Void Nucleation and Growth from Heterophases and the Exploitation of New Toughening Mechanisms in Metals
文献类型：期刊论文
| 作者 | Guo, Yi3; Paramatmuni, Chaitanya4; Avcu, Egemen1,2 |
| 刊名 | CRYSTALS
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 13期号:6页码:31 |
| 关键词 | strength and ductility void nucleation and growth hydrostatic pressure toughening |
| DOI | 10.3390/cryst13060860 |
| 通讯作者 | Guo, Yi(yguo@imr.ac.cn) ; Paramatmuni, Chaitanya(c.paramatmuni@sheffield.ac.uk) ; Avcu, Egemen(egemen.avcu@kocaeli.edu.tr) |
| 英文摘要 | Heterophases, such as precipitates, inclusions, second phases, or reinforcement particles, often drive void nucleation due to local incompatibilities in stresses/strains. This results in a significant life-limiting condition, as voids or their coalescence can lead to microcracks that reduce the ductility and fatigue life of engineering components. Continuum-mechanics-based analytical models have historically gained momentum due to their relative ease in predicting failure strain. The momentum of such treatment has far outpaced the development of theories at the atomic and micron scales, resulting in an insufficient understanding of the physical processes of void nucleation and growth. Evidence from the recent developments in void growth theories indicates that the evolution of voids is intrinsically linked to dislocation activity at the void-matrix interface. This physical growth mechanism opens up a new methodology for improving mechanical properties using hydrostatic pressurization. According to the limited literature, with a hydrostatic pressure close to 1 GPa, aluminium matrix composites can be made 70 times more ductile. This significant ductility enhancement arises from the formation of dislocation shells that encapsulate the heterophases and inhibit the void growth and coalescence. With further investigations into the underlying theories and developments of methods for industrial implementations, hydrostatic pressurization has the potential to evolve into an effective new method for improving the ductility and fatigue life of engineering components with further development. |
| 资助项目 | National Natural Science Foundation of China[52201149] ; National Science and Technology Major Project[J2019-VI-0019-0134] |
| WOS研究方向 | Crystallography ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001014199000001 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China ; National Science and Technology Major Project |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178342]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Guo, Yi; Paramatmuni, Chaitanya; Avcu, Egemen |
| 作者单位 | 1.Kocaeli Univ, Inst Nat & Appl Sci, Dept Mech Engn, TR-41001 Kocaeli, Turkiye 2.Kocaeli Univ, Ford Otosan Ihsaniye Automot Vocat Sch, TR-41650 Kocaeli, Turkiye 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Univ Sheffield, Dept Mat Sci & Engn, Sheffield S1 3JD, England |
| 推荐引用方式 GB/T 7714 | Guo, Yi,Paramatmuni, Chaitanya,Avcu, Egemen. Void Nucleation and Growth from Heterophases and the Exploitation of New Toughening Mechanisms in Metals[J]. CRYSTALS,2023,13(6):31. |
| APA | Guo, Yi,Paramatmuni, Chaitanya,&Avcu, Egemen.(2023).Void Nucleation and Growth from Heterophases and the Exploitation of New Toughening Mechanisms in Metals.CRYSTALS,13(6),31. |
| MLA | Guo, Yi,et al."Void Nucleation and Growth from Heterophases and the Exploitation of New Toughening Mechanisms in Metals".CRYSTALS 13.6(2023):31. |
入库方式： OAI收割
来源：金属研究所
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